Handle stem



FIG. 1 is a perspective view of a handle stem showing my new design;

FIG. 2 is a front view;

FIG. 3 is a bottom view, the top being a mirror image;

FIG. 4 is a left end view;

FIG. 5 is a right end view.

The broken line showing of the lever is for illustrative purposes only. 

The ornamental design for a handle stem, as shown and described. 